Dismantling methods and steps of guide idler wheel and final drive sprocket of excavator excavation

Disassembly is an indispensable task in excavator maintenance. It needs certain steps and methods to complete it. Otherwise, new faults will be added. Today we will talk about the disassembly methods of excavator guide idler wheel and final drive sprocket.

The disassembly steps of excavator front idler are as follows:

First remove the front idler wheel from the crawler rack, and then decompose the guide wheel.

Note: Before decomposition, the greasy oil inside should be released and the work should be careful. The floating seal ring with bearings on one side of the floating seal ring should be carefully removed, and then the shaft, sleeve and spring components should be disassembled one by one. The dismantled guide idler wheel and other parts should be inspected to see if there are pits, cracks and fracture defects. If the wear of the track tensioner idler exceeds the limit value, it should be repaired by surfacing. Check the dimensions of the shaft and bearing, check whether the track spring has cracks and fatigue defects, and whether it is broken. After finding out the problem, replace the new parts.

The assembly sequence is opposite to the disassembly sequence. When installing spring components, hydraulic jacks can be used as auxiliary equipment if necessary. The assembly of floating seal rings should pay enough attention. After assembly, the engine oil should be injected from greasy nozzles, and the amount of oil should be about 0.3L. After installation of guide wheels, the tension of track should be adjusted.

Excavator final drive sprocket steps:

When disassembling, the track shoe plate, cover plate, hydraulic hose, hydraulic motor components and so on are disassembled one by one. If necessary, lifting machine is used to assist the lifting and disassembly.

After the disassembly is completed, check whether the driving sprocket wheel has broken teeth, cracks, damage and wear, check whether the brake valve, hydraulic motor and gearbox are damaged.

Installation sequence is contrary to disassembly sequence. When assembling, attention must be paid to the installation status and direction of the original parts. All 0-rings must be replaced by new parts. When fastening bolts, the specified torque must be tightened.

Above is the way to disassemble track idler and drive sprocket of excavator. Disassembly is a detailed work. It needs patience to complete.